|
|
Post by civix001 on May 9, 2011 6:21:17 GMT -8
Hello,
This genus PERIGA makes me crazy about its variabilities.
PERU, JUNIN, SATIPO, RIO VENADO VILLAGE, 2 february
elevation : 1200m
wingspan : 55mm
What about this one ?
Thank you
Best
|
|
|
|
Post by oehlkew on May 9, 2011 11:40:04 GMT -8
Probably three possibilities:
Periga bispinosa,
Periga parvibulbacea,
Periga prattorum.
Wingspan can really help with these three.
I favour bispinosa for a couple of reasons. If you can provide measured wingspans (not guesses) for all specimens, I will try to refine the ids and offer reasons.
Please send me a personal id with your real name. I will not reveal it here. I just want to credit the images properly on WLSS.
I do not recognize you just by a first name or an email address.
There are now close to 800 worldwide WLSS members.
Bill Oehlke
|
|
|
|
Post by civix001 on May 10, 2011 9:56:30 GMT -8
Dear Bill,
i sent you an mp.
The datas for the specie are changed.
I think the PERIGA 1 AND 2 are the same (wingspan are same too), but the PERIGA 3 seems to be different (I think BISPINOSA).
Thank you
|
|
|
|
Post by oehlkew on May 10, 2011 11:41:42 GMT -8
Hi,
Bispinosa wingspan is usually 61-65mm for males and documented locations in Peru include Junin.
The pm line is bordered with yellow on the body side.
It is very dificult to separate from prattorum by outward appearance. Lemaire has recordings from 200-950 m in different locations.
Prattorum wingspan is usually 66-68mm for males but documented locations in Peru do not include Junin.
The pm line is not bordered with yellow on the body side.
Lemaire has recording from 290-1200m in different locations.
Parvibulbacea is the smallest species with wingspans given at
50-63mm. Documented locations include Junin.
The apex is distinct, more produced and pointed as compared to other species.
Lemaire has recordings from locations ranging from 650-2100m.
Periga #1 is right size, right location, right elevation, and has pointed apex for parvibulbacea. I do not see inward tracing of yellow on pm line.
Periga #2 is right size, right location, right elevation, and has pointed apex for parvibulbacea. I do not see inward tracing of yellow on pm line.
Periga #3 is right size, right location, right elevation, and has pointed apex for parvibulbacea. I do not see inward tracing of yellow on pm line.
Closer reading of Lemaire's work means I have to rule out bispinosa due to absence of inward yellow lining of pm line, lower elevation, about 20% average greater wingspan.
Prattorum is even larger than bispinosa and seems to have no documented presence in Junin.
For those reasons I think Periga parvibulbacea is probably the correct choice for all three Periga specimens. They are highly variable.
The wingpans really helped, and looking at the larger images showed them without the inner lining of yellow on pm line, although that feature does not seem as reliable as indicated.
Parvibulbacea also seems to be a more commonly reported species.
Bill Oehlke
|
|
